I have no tools option in my bt settings and can only connect to paired devices in range, not delete them. Once paired, always prepared Bu I am now 99,9% sure it is in my phone the problem lies. I started Spotify on my gfˋs Sony, set bt on, put the Fidelios on and they connected right up. I went into another room and had my gf call me from my phone and everything worked great. I answered the call, adjusted the volume and ended the call, all from the headset. And when the call was ended the music picked up from where it stopped. Just as a set of bt headphones connected to a smartphone should Last weekend I visited a friend of mine who got ATH-M50 for x-mas and when I wanted to try them it was like the plug did not fit properly. I had sound for under a second and then it went back to the phones speaker. Pulling, pushing and fiddling with the plug did nothing. My friend said the plug was a little strange so I just left it with that. Yesterday I tried to wire the Fidelios to the S5 and wouldenˋt you know, same result! The phone claims it has a headset connected, I get a blip of sound in the moment I connect them and then it returns to the phone. All I can say is: I have no problem at all with my Fidelio M2BTˋs, they are great! I have several problems with my Samsung S5, it will go in for a warranty check as soon as I get back.